Inner Plane

From Syra D&D Wiki

The Inner Planes are places of raw magic and power. Alongside the Astral Sea, they border the Material Plane. The original Inner Planes were the Negative Energy Plane, the Positive Energy Plane, and the Elemental Planes of Earth, Fire, Air, and Water. During the Deity War, the Negative Energy Plane was sucked into the Plane of Shadow to create the Shadowfell. This unbalanced the other Inner Planes, causing the four elemental planes to collapse into each other and form the Elemental Chaos. It is unknown what happened to the Positive Energy Plane. In addition, one of the Outer Planes, the Abyss, was pulled out of the Astral Sea and is now considered to be one of the Inner Planes.